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12 Oct
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Black siamang sitting in the grass, the gular sac inflated under the chin

Siamang

I.U.C.N status

International Union for Conservation of Nature

LC Least concern
NT Near threatened
VU Vulnerable
EN Endangered
CR Critically endangered
EW Extinct in the wild
EX Extinct

Identity card

Class : Mammals
Order : Primates
Family : Hylobatidae
Genus : Symphalangus
Species : syndactylus
Average size 70 to 90 cm
Weight 10 to 12 kg
Longevity 18 to 22 years (45 years in captivity)
Sexual maturity 6 to 7 years
Gestation 7 to 8 months
Litter 1 offspring every 2 to 3 years
Diet Mainly folivorous and frugivorous

Leaves, fruits, seeds, flowers, bark...

Did you know?

The siamang, the largest of the gibbons, is distinguished by its throat, which expands considerably when it sings. This vocal sac amplifies their powerful vocalizations, used to mark their territory and strengthen social bonds. On the ground, they move by walking on two legs, while in the trees, they swing from branch to branch using only the strength of their arms, a technique called brachiation.

Threats and conservation

The siamang is endangered due to the destruction of its habitat by logging and agriculture, as well as poaching for the trade in baby siamangs. The French association “Kalaweit” manages rehabilitation centres in Kalimantan and Sumatra, where more than 300 primates rescued from illegal trade are cared for and reintroduced into the wild.

Black siamang sitting in the grass, gular sac inflated under the chin
Black siamang sitting on a log in the grass
Black siamang with inflated gular sac under the chin
Siamang standing on its hind legs in the grass, arms hanging and gular sac visible
Black siamang sitting in the grass
Black siamang sitting in the grass, gular sac inflated under the chin
Black siamang sitting on a log in the grass
Black siamang with inflated gular sac under the chin
Siamang standing on its hind legs in the grass, arms hanging and gular sac visible
Black siamang sitting in the grass
Black siamang sitting in the grass, gular sac inflated under the chin
Black siamang sitting on a log in the grass
Black siamang with inflated gular sac under the chin
Siamang standing on its hind legs in the grass, arms hanging and gular sac visible
Black siamang sitting in the grass

Where can you see this animal?

Check the park map to find his habitat at ZooParc.

Learn more